As well as providing advanced modelling software, Quantemol also delivers a unique consultancy service. With our suite of software and a team of highly skilled engineers, we provide extensive and in depth analysis tailored to specific customer requirements. Consultancy projects range from a small quick calculations work to comprehensive plasma chemistry development. Typical types of consultancy work provided are:

  • Calculations of specific electron-molecule cross sections including:

             – Electron impact dissociation cross sections producing specific products

             – Electron impact ionisation dissociation producing specific products

  • Calculation of specific electron-atom cross sections including relativistic effect BSR method
  • Industrial plasma tool simulations
  • Plasma process parameter optimisations
  • Plasma chemistry designs
  • Plasma etching and deposition calculations
  • General multiphysics problems (CFD, etc..)

Quantemol has successfully undertaken several large consulting projects for industrial customers. A distinctive feature of our service is that we work with non-standard requests, using computational methods and literature research in order to achieve the results within deadlines. We always strive to deliver a work of value to our customers and prioritise research tasks according to the client’s development needs.

A formal completion report is delivered at the end of all work with the results (raw data, graphs, videos etc…) ready for use. We work on the basis of complete confidentiality and understand the importance of protecting intellectual property.

Please click here to see our 2018 consultancy brochure. 

Plasma Chemistry Consultancy

Software consulting

As well as providing advanced modelling software, Quantemol also provides a unique consultancy service. With our suite of software and highly skilled expert scientists, we offer complete and in-depth analysis tailored to specific customer requirements. These range from small quick calculations to comprehensive development projects.

More details find in our Consultancy brochure here or contact us on, +44 (0) 203 549 58 41

Atomic X-sections

Quantemol is now offering access to world leading expertise in calculation of atomic electron and photon cross sections. 

Quantemol is collaborating with Dr. Oleg Zatsarinny from Drake University, USA. Over several years Dr Zatsarinny has developed a new suit of programs (BSR) to model electron and photon interaction with atoms and ions based on the B-spline R-Matrix method. The programs can be used to calculate elastic, inelastic, ionization, differential and momentum transfer electron-impact cross sections, along with photoionization cross sections what is important for CORINF collaboration. Additionally, the codes can be used for atomic-structure bound-state calculations, including the accurate calculations of oscillator strengths for a wide range of levels. Distinguish feature of the code is employing B-splines as universal basis for bound and continuum atomic orbitals that guarantees the high numerical accuracy of computations. The most important new feature of the method is the ability to use flexible non-orthogonal radial functions for both the target and scattering wavefunctions. Along with the multi-configuration Hartree-Fock method it allows one use much more accurate target state as employed before. Last years the code was extended with new fully-relativistic version based on the Dirac-Coulomb Hamiltonian.

Quantemol can now offer atomic consultancy projects which deploy the B-Spline R-Matrix method, both in the non-relativistic scheme suitable for light atoms or in fully-relativistic
approach which is necessary for accurate treatment of heavy atoms.

Precise cross sections data produced by B-spline R-matrix provides an invaluable source of data on atomic spectrum and a theoretical base for measurements in optical spectroscopy and mass spectrometry as well as exploration of new sources of light.

The B-Spline R-Matrix (BSR) Method
[O. Zatsarinny, Comp. Phys. Commun. 174, 273 (2006)]

• The method is based on the non-perturbative close-coupling expansion.
• The close-coupling equations are solved using the R-matrix method.
• Atomic-structure calculations − frozen-core approximation

Distinctive feature: Allows for non-orthogonal orbital sets to represent both bound and continuum radial functions

  • independent generation of target states – much more accurate target representation (term-dependence, relaxation effects, correlation)
  • no artificial orthogonality constraints for continuum orbitals – more consistent treatment of N-electron target and (N+1)-electron collision system −> (no pseudo−resonances, improved convergence)


Experimental X-section comparison